Review of GNSS landslide monitoring and early warning
Qin Zhang, BAI Zhengwei, HUANG Guanwen, Yuan Du, Duo Wang
Abstract
Landslides, widely happening across the world, have a severely negative impact on human activities and people's residential security. GNSS has been widely used in landslide disaster monitoring and warning, but there are still many technical bottlenecks in complex scenario monitoring and warning. First of all, this paper reviews the current research on landslip reduction technologies by GNSS such as monitoring receiver, high-precision positioning and multi-source heterogeneous data fusion monitoring, and lays special stress on analyzing the advantages, applicable range and latent problems of landslide-monitoring technologies of every kind. Furthermore, the technical methods suitable for releasing warning by GNSS are introduced from landslide displacement prediction, the prediction of sliding time and the implementation of early warning. Lastly, a comprehensive analysis on the challenges brought about by GNSS's real-time monitoring in complex scenarios is conducted, and some ideas are proposed for the future development and research of technologies monitoring and warning landslides through GNSS.